cost :)Take a trip over to see Rick at "gofastmotorsports". He has the modules at a reasonable price. Tell him the seefoo sent you. Maybe I can get some brownie points.

Q's limits Nice review and pretty darned accurate. I've had one for a couple of years and the picture is great along with ease of operation. One thing about the number of channels stored. I can tell you that with mine, when you get about 100, it gets a bit wierd. It will scan'/lock and then...